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  1. Backfill shall consist of URB or quarry fines only, compacted and jetted for settlement (3/4 crushed rock). The pipe shall be firmly bedded in the trench bottom along its entire length and the backfill will be free from stones or rock greater than 1 inch and shall be hand tamped to the top of the pipe. In county maintained roads, bedding and backfill shall confirm to county or state requirements.
  2. No line shall be backfilled or covered prior to testing and inspection by district staff.
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